Varmeteknikk AS
Phone +47 23 37 55 00 August 2020 V2
4
Commissioning
NB! BEFORE STARTING, CHECK THE FOLLOWING POINTS:
- Check that the boiler and the system are filled with water and that the system is tight.
- Check that the system is ventilated.
- Check that there is circulation on the system and that the water goes the right way
through the boiler.
- Check that the system has min. 0.6 bar overpressure to avoid boiling.
- Check that the boiler is connected to the correct voltage.
NB! ALL ELECTRICAL CONNECTIONS MUST BE TIGHTENED BEFORE INSERTING
VOLTAGE ON THE BOILER.
Do not start the boiler if there is a risk that the water in the boiler may be frozen.
Start-up
The boiler is started by switching on the control switch in the front of the boiler. The display will
after a few seconds display actual water temperature, as well as set temperature in parentheses.
The line below shows the switched-on power. The boiler will now gradually begin to enter the
power required to achieve the set temperature.
NB! If the boiler is controlled from an SD system, a lack of signal from here can prevent the boiler
from starting.
The set temperature is set to 80 ° C at the factory. This can be changed by pressing the +/- button
Then the E button to save new value. The step time is set to 40 seconds and should not be set
lower as shorter step time will lead to unnecessary wear on the contactors. It is normally not
necessary to make other settings on the controller.
The regulator
The boiler regulator is of the binary proportional type and integrative for temperature control. It is
adjustable between 5 - 100 ° C. A hysteresis of 2 ° is included in the proportional control and
counteracts unnecessary switching of power steps. The integration time depends on the step time
and cannot be set manually. The controller has the option of power control and outdoor
temperature compensated set temperature. Inputs for 0-10 V for remote control of either power or
temperature are also included. A 2-line display shows actual temperature, set temperature (in
brackets), number of connected power steps and switched on power. An alarm LED is located
below the display and will flash if an error occurs. In addition, the alarm relay will drop. Possible
errors can be:
Sensor fault: Short circuit or breakage of sensor or sensor cable
Alarm power: Circuit breaker not switched on, possibly tripped, safety thermostat (STB) tripped
Alarm network: Control voltage to regulator too low (<190 V) or fault in regulator
Cooke Industries - Phone: +64 9 579 2185 Email: [email protected] Web: www.cookeindustries.co.nz
